Display apparatus and method for controlling power usage of the display apparatus

Patent metadata

Field	Value
Publication number	US-2017205872-A1
Application number	US-201615325436-A
Country	US
Kind code	A1
Filing date	May 20, 2016
Priority date	Jul 20, 2015
Publication date	Jul 20, 2017
Grant date	—

Abstract

The present application discloses a display apparatus including a display panel; a backlight module; a motion sensor for detecting a motion parameter of the display apparatus and generating a motion parameter signal representing the motion parameter; at least one signal processor for comparing the motion parameter with a threshold value, and generating a power off signal if the motion parameter is greater than the threshold value; and a controller for controlling a state of the backlight module; the controller is configured to control the backlight module in a power off state upon receiving the power off signal.

First claim

1 . A display apparatus, comprising:
a display panel; a backlight module; a motion sensor for detecting a motion parameter of the display apparatus and generating a motion parameter signal representing the motion parameter; at least one signal processor for comparing the motion parameter with a threshold value, and generating a power off signal if the motion parameter is greater than the threshold value; and a controller for controlling a state of the backlight module; the controller is configured to control the backlight module in a power off state upon receiving the power off signal.

2 . The display apparatus of claim 1 , wherein the motion parameter comprises a vibration frequency and an acceleration.

3 . The display apparatus of claim 1 , further comprising an application processor for transmitting analog voltage to the display panel; wherein the controller is configured to control the application processor in a state in which transmission of analog voltage to the display panel is discontinued upon receiving the power off signal.

4 . The display apparatus of claim 3 , wherein the controller is configured to transmit a first analog voltage control signal to the application processor upon receiving the power off signal, the application processor is configured to be in the state in which transmission of analog voltage to the display panel is discontinued upon receiving the first analog voltage control signal.

5 . The display apparatus of claim 1 , wherein the controller is configured to maintain the state of the backlight module if the motion parameter is no greater than the threshold value and the display apparatus is in a sleep mode.

6 . The display apparatus of claim 5 , further comprising an application processor for sending analog voltage to the display panel; wherein the controller is configured to maintain an analog voltage transmission state of the application processor if the motion parameter is no greater than the threshold value.

7 . The display apparatus of claim 6 , wherein the controller is configured to transmit a second analog voltage control signal to the application processor if the motion parameter is no greater than threshold value, the application processor is configured to maintain the analog voltage transmission state upon receiving the second analog voltage control signal.

8 . The display apparatus of claim 1 , wherein
if the motion parameter is no greater than the threshold value; and the backlight module is in a power off state, the display apparatus is in an active mode when the motion parameter is determined to be no greater than the threshold value; the at least one signal processor generates a power on signal, and the controller is configured to control the backlight module in a power on state upon receiving the power on signal.

9 . The display apparatus of claim 8 , further comprising an application processor for sending analog voltage to the display panel; wherein the controller is configured to transmit a third analog voltage control signal to the application processor if the motion parameter is no greater than threshold value, the application processor is configured to be in the state in which transmission of analog voltage to the display panel is resumed upon receiving the third analog voltage control signal.

10 . The display apparatus of claim 1 , wherein the display apparatus is a mobile phone comprising a front cover, a back cover, two long sides parallel to each other connecting the front cover and the back cover;
a contact sensor on the back cover of the mobile phone for detecting a contact from a conductive object abutting against the back cover and generating a signal representing a gross contact area between the conductive object and the back cover; and the at least one signal processor is configured to compare the gross contact area with a threshold contact area and generate the power off signal if the motion parameter is greater than the threshold value and the gross contact area is greater than the threshold contact area.

11 . The display apparatus of claim 1 , wherein the display apparatus is a mobile phone comprising a front cover, a back cover, two long sides parallel to each other connecting the front cover and the back cover;
one or more pressure sensor on the two long sides of the mobile phone for detecting a pressure from fingers pressed against the two long sides and generating a signal representing a value of the pressure, and the at least one signal processor is configured to compare the value of the pressure with a threshold pressure value and generate the power off signal if the motion parameter is greater than the threshold value and the value of the pressure is no greater than the threshold pressure value.

12 . (canceled)

13 . A mobile phone comprising a display panel, a backlight module, a front cover, a back cover, two long sides parallel to each other connecting the front cover and the back cover;
a contact sensor on the back cover of the mobile phone for detecting a contact from a conductive object abutting against the back cover and generating a signal representing a gross contact area between the conductive object and the back cover; at least one signal processor for comparing the gross contact area with a threshold contact area; and generating a power off signal if the gross contact area is greater than the threshold contact area; and a controller for controlling a state of the backlight module; the controller is configured to control the backlight module in a power off state upon receiving the power off signal.

14 . The mobile phone of claim 13 , further comprising a motion sensor for detecting a motion parameter of the display apparatus and generating a motion parameter signal representing a motion parameter; the motion parameter comprises a vibration frequency and an acceleration;
wherein the at least one signal processor is configured to compare the motion parameter with a threshold value; and generate the power off signal if the motion parameter is greater than the threshold value and the gross contact area is greater than the threshold contact area.

15 . The mobile phone of claim 13 , further comprising one or more pressure sensor on the two long sides of the mobile phone for detecting a pressure from fingers pressed against the two long sides and generating a signal representing a value of the pressure;
wherein the at least one signal processor is configured to compare the value of the pressure with a threshold pressure value; and generate the power off signal if the gross contact area is greater than the threshold contact area, and the value of the pressure is no greater than the threshold pressure value.

16 . A method for controlling power usage of a display apparatus, comprising:
detecting a motion parameter of the display apparatus; generating a motion parameter signal representing a motion parameter; comparing the motion parameter with a threshold value; and generating a power off signal if the motion parameter is greater than the threshold value; and controlling a state of a backlight module of the display apparatus based on an outcome of the comparing step; wherein the controlling step comprises controlling the backlight module in a power off state when the power off signal is generated.

17 . The method of claim 16 , wherein the motion parameter comprises a vibration frequency and an acceleration.

18 . The method of claim 16 , wherein the controlling step comprises controlling an application processor of the display apparatus in a state in

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics Tech Co Ltd

Inventors

• He Quanhua
• Zhang Hao
• Shi Lingyun
• Wang Guangquan
• Chen Zhen
• Bo Jian

Classifications

• G09G2320/0626

  for control of overall brightness · CPC title

• G09G2330/022

  in absence of operation, e.g. no data being entered during a predetermined time · CPC title

• G06F1/3231

  Monitoring the presence, absence or movement of users · CPC title

• G09G3/3406

  Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336) · CPC title

• G06F1/3265 Primary

  Power saving in display device · CPC title